Optimum Regression Model Between Rainfall and Wheat Yield

Zhang Zhengbin; Shan Lun; Wang Dexuan

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Optimum Regression Model Between Rainfall and Wheat Yield

- Optimum Regression Model Between Rainfall and Wheat Yield
- Bulletin of Soiland Water Conservation Vol. 15, Issue 4, Pages: 31-34(1996)
- 作者机构：
  
  中国科学院水利部水土保持研究所陕西杨陵,712100
- 作者简介：
- 基金信息：
- DOI：
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- Published：1996
- 稿件说明：
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Zhang Zhengbin, Shan Lun, Wang Dexuan. Optimum Regression Model Between Rainfall and Wheat Yield[J]. Bulletin of Soiland Water Conservation, 1996, 15(4): 31-34.
DOI：

Zhang Zhengbin, Shan Lun, Wang Dexuan. Optimum Regression Model Between Rainfall and Wheat Yield[J]. Bulletin of Soiland Water Conservation, 1996, 15(4): 31-34. DOI：

摘要

通过对陕西省关中及延安地区58个县（区）的14个降水因子和小麦产量进行相关和多元逐步回归分析，结果表明：就秦岭以北、榆林地区以南的降雨场而言，小麦生育期间的各月降水，除2月份以外，均与小麦产量成显着正相关；而休闲期间的6

8三月降水与小麦产量成显着负相关。得到了由1月、4月、8月降水和干燥度4个降水因子与小麦产量构成的最优回归模型。最后揭示了降水并不是在延安北部、关中东部和西部旱塬及秦岭北坡沿线各地小麦增产的限制因子，而在关中中部及延安南部，降水增产作用得到一定程度的发挥。

Abstract

Through correlation analysis to rainfall and wheat yield in Shaanxi province

an opti-mum regression model of them is established.It is indicated that in the north of Yanan

the westand east of rairifed highland in Guanzhong plain and along the north slop line of the Qinlingmountains

the yield-increasing of rainfall is not normally brought into play

but in the middlepart of Guanzhong plain and the south of Yanan

this effect brings into play to a certain extent.And the corresponding yield-increasing measures for wheat in various areas of this province areput forward.

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